# name : Slides Columns
# key : slides.columns
# key : slides.speaker.columns
# key : ppt.columns
# key : beamer.columns
# contributor: Shuguang
# expand-env: ((yas-indent-line 'fixed) (yas-wrap-around-region 'nil))
# --
:::::::::::::: {.columns}
::: {.column width="40%"}
$0
:::
::: {.column width="60%"}
contents...
:::
::::::::::::::